Auxiliary electric lock device and electric lock system

Abstract

To provide an auxiliary electric lock device and an electric lock system which are capable of efficiently enhancing security performance.SOLUTION: An auxiliary electric lock device is mounted on a door 2 lockable by a main lock 1, and includes: a sensor 3 for detecting a vibration of the door 2; a lock control section 4 for outputting a lock instruction signal upon detection of an unauthorized door opening operation to the door 2 by the sensor 3; and a locking section 6 held in an unlocked state and shifted to a locked state by an electric actuator 5 when the locking instruction signal from the lock control section 4 is output.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an auxiliary electric lock device and an electric lock system. [Background technology]

[0002] 2. Description of the Related Art Patent Document 1 describes a known auxiliary lock that is installed in addition to a main lock in order to improve crime prevention performance.

[0003] In this conventional example, the auxiliary lock is locked or unlocked together with the main lock by locking or unlocking the main lock. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-020606 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, since the auxiliary locks in the conventional examples described above lock and unlock in sync with the control operation for the main lock, it is thought that increasing the number of auxiliary locks will contribute to improving security performance. However, normal operation with a large number of locks that operate simultaneously is overkill, and this creates the problem of complicated control and mechanical structures.

[0006] The present invention has been made to overcome the above-mentioned drawbacks, and has an object to provide an auxiliary electric lock device that can efficiently improve crime prevention performance.

[0007] Another object of the present invention is to provide an electric lock system that can efficiently improve crime prevention performance. [Means for solving the problem]

[0008] According to the present invention, the above object is to It is attached to a door 2 that can be locked by a main lock 1, A sensor 3 for detecting vibration of the door 2; Unauthorized door opening operation to the door 2 A lock control unit 4 that outputs a lock instruction signal upon detection of the a locking unit 6 that is maintained in an unlocked state and that transitions to a locked state by an electric actuator 5 when a lock instruction signal is output from the lock control unit 4; A second sensor 7 is provided for detecting vibrations at a position spaced apart from the door 2, The lock control unit 4 judges whether or not there has been an unauthorized door opening operation based on the difference between the outputs of the sensor 3 and the second sensor 7. This is achieved by providing an auxiliary electric lock device.

[0009] The auxiliary electric lock device is used as an addition to an electric lock system consisting of a main lock 1, which is controlled to be locked and unlocked by a specified lock control device 9, or an auxiliary lock 10 added to the main lock, and has a sensor 3 that detects vibrations of the door 2, a lock control unit 4, and a locking unit 6.

[0010] The sensor 3 can be a vibration sensor, an acceleration sensor, etc., and the output from the sensor 3 is output to the lock control unit 4, which determines whether the vibration is due to wind, etc., or an unauthorized door-opening operation to illegally open the door 2. If it is determined to be an unauthorized door-opening operation, a locking signal is output to the electric actuator 5 of the locking unit 6, and the locking unit 6 is switched to the locked state.

[0011] Unauthorized door-opening operations can be determined by comparing the output of sensor 3 when an operation to open door 2 using a crowbar or an act of vandalism by applying an impact load to a cylinder lock, etc., is actually performed with an experimentally determined threshold value, etc.

[0012] Therefore, the auxiliary electric lock device of the present invention transitions to a locked state when an unauthorized door-opening operation is performed on the door 2, thereby making it possible to increase resistance to unauthorized door-opening operations.

[0013] In addition, during normal operation, the door is kept in an unlocked state and transitions to a locked state only if an unauthorized door opening operation is detected. This eliminates the need for an unlocking operation during normal operation, simplifying the structure and preventing people from being locked in or out of a room in the event of, for example, a power outage or fire.

[0014] Furthermore, it is desirable for electric locks to have a mechanical unlocking means in case of power outages, etc. For example, when a secondary lock is set as a means to reinforce the main lock, the locks are positioned close to each other so that the means for transmitting operating force by mechanical operation does not become overly complicated.

[0015] However, the auxiliary electric lock device of the present invention, which is kept in an unlocked state during normal operation and does not need to be activated by operating the main lock 1, can be placed in a position away from the main lock 1, for example, on the upper edge of the door 2. Therefore, when attempting to attack the lock with a crowbar or the like, it becomes necessary to attack a distant location, thereby increasing resistance to unauthorized door opening operations.

[0016] The lock control unit 4 of the auxiliary electric lock device can be incorporated into the control system of the lock control device 9, which electrically controls the locking and unlocking of the main lock 1, for example. However, if the lock control unit 4 and the locking unit 6 are housed in the same case and configured to be controlled by the same control system, the auxiliary electric lock device can be added without making major changes to the electric lock system currently in use.

[0017] The presence or absence of unauthorized door opening operation is determined by the difference between the output of the sensor 3 attached to the door 2 and the output of the second sensor 7 that detects vibrations at a position distant from the door 2. Since it is possible to eliminate the effects of vibrations of the entire structure including the door 2 caused by earthquakes, etc. and extract only the load on the door 2, it is possible to improve the accuracy of determining unauthorized door-opening operations.

[0018] In addition, the unlocking operation for the locking unit 6 of the auxiliary electric locking device, which has entered a locked state due to an unauthorized door-opening operation, can be performed by an operation system separate from the locking / unlocking operation for the main lock 1. However, if the unlocking operation is configured to occur in synchronization with the unlocking operation for the main lock 1 regardless of the locked / unlocked state, the locking unit 6, which has entered a locked state due to an unauthorized door-opening operation, can be returned to its initial state, i.e., the unlocked state, simply by performing the normal unlocking operation for the main lock 1, thereby improving usability.

[0019] Furthermore, when the locking section 6 of the auxiliary electric locking device transitions to a locked state in synchronization with the locking operation of the main lock 1, it becomes necessary to set up a mechanical operating force transmission means to synchronize with the unlocking operation of the main lock 1 in preparation for a subsequent power outage, etc., or to set up a separate mechanical unlocking means.

[0020] If the synchronized operation with the main lock 1 is configured to be one-way, that is, to follow only the unlocking operation of the main lock 1 and maintain the unlocked state without following the locking operation, as described above, there is no need to provide a non-electrical mechanical transmission means to prepare for power outages, etc., and the structure can be simplified.

[0021] In this case, if the locking unit 6 is configured to transition to an unlocked state in response to an unlocking operation of the thumb turn 8 of the main lock 1, the structure will be simplified because the unlocking operation of the locking unit 6 can be performed simply by monitoring the operation of the thumb turn 8.

[0022] Furthermore, if the locking unit 6 is configured to be lockable by a locking operation different from the locking operation of the main lock 1 to the lock control device 9 that controls the main lock 1, the locking unit 6 of the auxiliary electric lock device can be used as a normal electric lock in cases such as when the person is absent for a long period of time, thereby further improving the crime prevention performance when the person is absent. Moreover, since the locking operation requires an operation other than that used in normal operation, such as a long press on the lock button 9a of the lock control device 9, it is possible to completely prevent malfunctions caused by inadvertently switching to the locked state.

[0023] Furthermore, the above objective is to Attached to door 2,A main lock 1 that is operated by a user to lock and unlock; A locking unit 6 is attached to the door 2 separately from the main lock 1 and is driven to lock and unlock by an electric actuator 5; A sensor 3 for detecting vibration of the door 2; A second sensor 7 that detects vibrations at a position separated from the door 2; The difference between the output from the sensor 3 and the output from the second sensor 7 is The lock control unit 4 includes a determination unit 4a that determines whether or not there is an unauthorized door opening operation on the door 2 by comparing the determination unit 4a with a preset threshold value. The locking unit 6 is maintained in an unlocked state regardless of the locking operation of the main lock 1. The lock control unit 4 achieves this by providing an electric lock system in which the lock unit 6 transitions to a locked state when the determination unit 4a detects an unauthorized door-opening operation on the door 2. Effect of the Invention

[0024] According to the present invention, when an unauthorized door-opening operation is performed on the door, the door transitions to a locked state, thereby increasing resistance to unauthorized door-opening operations. [Brief description of the drawings]

[0025] [Figure 1] 1 is an overall configuration diagram showing an electric lock system of the present invention. [Diagram 2] FIG. 2 is a functional block diagram of FIG. 1. [Diagram 3] 4 is a flowchart of the operation of the lock control device. [Figure 4] 4 is a flowchart of the operation of the lock control device. [Diagram 5] FIG. 11 is a functional block diagram showing another embodiment of the present invention. [Figure 6] FIG. 13 is a block diagram showing yet another embodiment of the present invention. [Figure 7] FIG. 7 is a block diagram showing a modified example of FIG. 6. [Figure 8] 8 is a flowchart of FIG. 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] FIG. 1 shows an electric lock system using an auxiliary electric lock device 20 of the present invention.

[0027] This electric lock system comprises a lock control device 9 installed at an appropriate location in the room, a reader 11 installed outside the room, a main lock 1 and a secondary lock 10 fixed to the door 2, and a locking section 6 of an auxiliary electric locking device 20. A deadbolt 12 is provided on each of the locking sections 6 of the main lock 1, the secondary lock 10, and the auxiliary electric locking device 20, and when in the locked state, the deadbolt 12 protrudes to restrict the door opening operation.

[0028] The main lock 1 and the auxiliary lock 10 are well-known electric lock devices, and by operating the lock button 9a or the unlock button 9b located on the lock control device 9, the deadbolt 12 can be advanced or retreated to allow or restrict the door opening operation.

[0029] Furthermore, in this example, the locking and unlocking operations of the main lock 1 and the sub lock 10 can be performed by active operation and passive operation using a remote control key 13, or by passive operation using a card key 14.

[0030] On the other hand, the locking section 6 constituting the auxiliary electric lock device 20 together with the lock control section 4 of the lock control device 9 described later is normally held in an unlocked state, i.e., with the deadbolt 12 retracted within the case, and when the sensor 3 detects an impact or vibration caused by a destructive operation on the door 2 with a crowbar or the like, the locking section 6 transitions to a locked state, i.e., with the deadbolt 12 protruding from the case. do.

[0031] It is desirable to install this locking unit 6 in a position away from the main lock 1 and the auxiliary lock 10 so that it is less susceptible to attacks on the vicinity of the main lock 1 and the auxiliary lock 10 when an unauthorized opening operation of the door 2 is performed with a crowbar or the like. If the locking unit 6 is installed in such a position, even if the main lock 1 and the auxiliary lock 10 are destroyed with a crowbar or the like, it will be necessary to attack the vicinity of the locking unit 6 again, thereby further improving the crime prevention performance.

[0032] The installation location of the locking unit 6 can be appropriately determined as long as it is an area that will not be directly affected by attacks on the vicinity of the main lock 1 and the auxiliary lock 10, but it can be installed, for example, at the upper and lower ends of the door 2, or more preferably, on the ceiling side edge of the door 2 in a position where the deadbolt 12 protrudes toward the ceiling.

[0033] The sensor 3 can be fixed to the door 2 so as to be able to detect attacks against the door 2 using a crowbar or the like, but in this embodiment, in order to avoid the troublesome task of fixing the sensor to the door 2, it is fixed to the case of the locking unit 6.

[0034] Furthermore, a second sensor 7 is provided to improve the accuracy of detecting unauthorized opening operations on the door 2. The second sensor 7 detects vibrations of the entire installation structure of the door 2 of a house or the like, and is attached to the lock control device 9 in this example.

[0035] As shown in Figure 2, the main lock 1 and the auxiliary lock 10 are well-known electric locks and include a locked / unlocked state detection unit 1b that operates under the control of the control unit 1a, an electric actuator 1c, a deadbolt 12 that moves between the locked and unlocked positions by the electric actuator 1c, and a controller communication unit 1d that communicates with a communication unit 9c of the lock control device 9 described later.

[0036] When the controller communication unit 1d receives a locking operation signal or an unlocking operation signal from the lock control device 9, the control unit 1a drives the electric actuator 1c to extend or move the deadbolt 12 to a retracted position, thereby transitioning to a locked or unlocked state, and the locked or unlocked state after the transition is detected by the locked or unlocked state detection unit 1b.

[0037] In this example, the locking unit 6 is an electric lock similar to the main lock 1 described above, and has an electric actuator 5 that operates under the control of the control unit 6a, a deadbolt 12 that moves between locked and unlocked positions by the electric actuator 5, a locking / unlocking state detection unit 6b that detects the locked / unlocked state, and a controller communication unit 6c that communicates with the communication unit 9c of the lock control device 9, and as with the main lock 1, the locking / unlocking operation is controlled by the lock control device 9.

[0038] In this example, a sensor 3 for detecting vibration of the door 2 is fixed to the case of the locking unit 6, and the output from the sensor 3 is transmitted to the lock control device 9 from the controller communication unit 6c.

[0039] The reader 11 provides a means for accessing the main lock 1 and the sub lock 10 from outside the room, and has a controller communication unit 11b, a card communication unit 11c, and a remote control communication unit 11d that are controlled by the control unit 11a, and a request button 11e is provided on the case. The reader 11 in this example allows access using a remote control key 13 and a card key 14 as authentication media, but it is also possible to authenticate biometric information such as fingerprints and veins, or a PIN number, and in this case, an authentication information acquisition unit such as a biometric authentication information acquisition unit or a PIN number input unit is provided.

[0040] The remote control key 13 operates a lock button 13a or an unlock button 13b arranged on the case to transmit a lock operation signal or an unlock operation signal together with the remote control key 13. The remote control key 13 wirelessly transmits an authentication code set for each lock to the remote control communication unit 11d of the reader 11. In addition to the active operation mode in which the lock / unlock buttons 13a and 13b are operated as described above, the remote control key 13 can also operate in a passive operation mode in which the user operates the request button 11e of the reader 11. In the passive operation mode, the remote control key 13 automatically wirelessly transmits an authentication code to the reader 11 in response to a request signal output from the remote control communication unit 11d of the reader 11 in response to the operation of the request button 11e.

[0041] When the card key 14 is held over the card reading section of the reader 11, it wirelessly transmits an authentication code unique to the card key 14 to the card communication section 11c of the reader 11, and information from the remote control key 13 etc. obtained by the reader 11 is output to the lock control device 9.

[0042] In addition, the reader 11 can identify a long press state in which the remote control key 13 is pressed for a predetermined period of time or more, or a long hold state in which the card key 14 is held over the card reading section for a predetermined period of time or more, and also a long press state of the request button 11e, and when a long press or the like is detected, a signal to that effect is also output to the lock control device 9.

[0043] The lock control device 9 has an authentication unit 9e that operates under the control of the control unit 9d, a lock / unlock instruction unit 9f, a communication unit 9c, lock / unlock buttons 9a and 9b, and a lock control unit 4 that, together with the locking unit 6, constitutes an auxiliary electric lock device 20, and a second sensor 7, and the lock control unit 4 has a judgment unit 4a, a locking signal output unit 4b, and a mode setting unit 15.

[0044] The authentication unit 9e verifies the locking / unlocking authority of the holder of the remote control key 13 or card key 14 by authenticating the authentication code obtained via the reader 11. When the communication unit 9c receives the authentication code from the reader 11, the authentication unit 9e compares the authentication code with a pre-registered authentication possible signal, and if they match, outputs an authentication establishment signal.

[0045] When the authentication unit 9e outputs an authentication establishment signal, the control unit 9d outputs a lock / unlock signal according to the specified lock / unlock type to the lock / unlock instruction unit 9f, and outputs a lock / unlock operation signal from the communication unit 9c to the main lock 1, the sub lock 10, and, in exceptional cases, the locking unit 6.

[0046] In other words, when an authentication code is output from an active remote control key 13, a locking or unlocking operation signal is output based on the lock / unlock type signal output along with the authentication code, and when an authentication code is output from a passive remote control key 13 or card key 14, a lock / unlocking operation signal is output that reverses the lock / unlock state detected by the lock / unlock state detection unit 1b of the main lock 1 and the sub lock 10.

[0047] As described above, the output of the second sensor 7 which detects vibrations of the lock control device 9 is acquired when the control unit 9d detects the output from the sensor 3 fixed to the locking unit 6 and output to the judgment unit 4a. The judgment unit 4a judges from the sensor 3 and the output of the second sensor 7 whether the vibrations observed at the door 2 are due to an attack to illegally open the door 2.

[0048] The judgment criteria in the judgment unit 4a can be determined experimentally by measuring the vibrations, etc., that occur when the door 2 is opened with a crowbar or the like, and the boundary value can be set as the threshold value. The magnitude, slope, etc. of the intensity output from the sensor 3 can be used as the threshold value.

[0049] The second sensor 7 obtains an output from the sensor 3 to offset vibration elements other than the door 2, i.e., vibration elements caused by earthquakes, etc., and the judgment unit 4a calculates the difference between the output from the sensor 3 and the output from the second sensor 7, and outputs an unauthorized operation detection signal when the calculated value exceeds the above-mentioned threshold value.

[0050] When the judgment unit 4a outputs an unauthorized operation detection signal, the locking signal output unit 4b sets a locking operation signal to be notified to the locking unit 6 in the lock / unlock instruction unit 9f and outputs it from the communication unit 9c, and the locking unit 6 that receives the locking operation signal via the controller communication unit 6c transitions to a locked state.

[0051] The mode setting unit 15 stores, as flag information, a selection of whether or not to use the locking unit 6 of the auxiliary electric lock device 20 as a third electric lock in addition to the main lock 1 and sub lock 10. The mode setting unit 15 has two setting modes: a normal operation mode that corresponds to normal operation, and a security mode that can be used during long absences, etc. In the normal operation mode, the lock / unlock instruction unit 9f controls the main lock 1 and sub lock 10, and in the security mode, the control targets are expanded to include the locking unit 6 in addition to the main lock 1 and sub lock 10.

[0052] As a result, in normal operation mode, the deadbolts 12 of the main lock 1 and the sub-lock 10 resist attempts to open the door 2, whereas in security mode, the deadbolt 12 of the locking section 6 as well as the main lock 1 and the sub-lock 10 protrude, so that there is greater resistance to attempts to open the door 2 when it is locked.

[0053] Also, even in the normal operation mode, when the determination unit 4a determines that an unauthorized door-opening operation has been performed on the door 2, the deadbolt 12 of the locking unit 6 is brought into a protruding state, thereby increasing resistance to the unauthorized door-opening operation.

[0054] Furthermore, in this example, in order to return the locking unit 6, which has transitioned to a locked state due to an unauthorized door-opening operation, to its initial state, i.e., an unlocked state, when outputting an unlocking instruction signal, the locking / unlocking instruction unit 9f outputs an unlocking instruction signal to all locks (main lock 1, auxiliary lock 10, and all of the locking units 6) even in the normal operation mode, regardless of the locked / unlocked state of the locking units 6.

[0055] In the normal operation mode, the locking unit 6 is only controlled for the unlocking operation, and the locking operation instruction from the locking / unlocking instruction unit 9f in the normal operation mode excludes the locking unit 6 from the control object and is output only to the main lock 1 and the auxiliary lock 10.

[0056] In addition to the security mode described above, the locking operation of the locking unit 6 via the lock control device 9 can also be performed by the user pressing and holding the request button 11e of the reader 11 or the locking button 13a on the remote control key, or by holding the card key 14 up for a long time.When the lock / unlock instruction unit 9f obtains input information from the reader 11 by pressing and holding it up for a long time, it performs the same operation as in the security mode, and the locking unit 6 also transitions to a locked state in response to the locking operation.

[0057] The locking operation of the locking unit 6 by long pressing or holding the key for a long time is effective only when the operation is performed, and differs from the operation by the mode setting unit 15, which is always effective as long as the setting is the security mode.

[0058] 3 and 4 show the control flow of the lock control device 9. As shown in Fig. 3, when control is started, it is determined whether or not there is an output from the sensor 3 fixed to the locking unit 6 of the auxiliary electric lock device 20 (step S1), and if there is an output, it is determined whether or not there is an output from the second sensor 7 (step S2).

[0059] If the output of the second sensor 7 is detected in step S2, the determination unit 4a calculates the difference between the outputs of the sensor 3 and the second sensor 7 (step S3), and then determines whether or not there has been an unauthorized door-opening operation based on the calculated value (step S4). If it is determined in step S4 that there has been an unauthorized door-opening operation, the locking signal output unit 4b of the lock control unit 4 outputs a locking operation signal, and the locking / unlocking instruction unit 9f outputs a locking signal to the locking unit 6 (step S5), and the control ends.

[0060] By executing step S5, the locking unit 6 is set in addition to the main lock 1 and the sub lock 10, which are already in a locked state. As a result, all the locks are locked.

[0061] Furthermore, if no output from the second sensor 7 is detected in step S2, i.e., if only the output from sensor 3 is detected, step S4 is executed based on the output from sensor 3 to determine whether or not there has been any unauthorized door-opening operation.

[0062] On the other hand, if there is no output from the sensor 3 in step S1, or if no unauthorized door-opening operation is detected in step S4, it is then determined whether the lock button 9a has been operated (step S11) to confirm the user's intention to lock or unlock the door.

[0063] If a button operation is detected in step S11, it is determined whether the button operation is a long press or not to confirm whether there is an intention to lock the locking unit 6 (step S12). If it is a long press, step S5 is executed and the locking unit 6 transitions to the locked state. Furthermore, the main lock 1 and the sub-lock 10 also transition to the locked state in response to a locking operation signal from the lock / unlock instruction unit 9f, and as a result, all locks are locked.

[0064] If a long press is not detected in step S12, the mode setting unit 15 judges whether or not the security mode is selected (step S13), and if the security mode is selected, step S5 is executed and all the locks are set to the locked state.

[0065] If the security mode is not set in the mode setting unit 15 in step S13, i.e., if the normal operation mode is selected, a locking signal is output only to the main lock 1 and the sub lock 10 (step S14), and the control ends. As a result, the main lock 1 and the sub lock 10 are locked, and the locking unit 6 is maintained in an unlocked state.

[0066] Furthermore, if the lock button 9a is not operated in step S11, as shown in FIG. 4, reception of a lock signal from the remote control key 13 is detected (step S20). If a lock signal is detected, it is determined whether the remote control key 13 has been pressed and held down (step S21). If the key has not been pressed and held down, step S13 is executed to check the mode, and if the key has been pressed and held down, step S5 is executed.

[0067] Moreover, if a locking signal from the remote control key 13 is not detected in step S20, i.e., if an active operation is not performed by the remote control key 13, then it is determined whether or not a passive operation has been performed by the remote control key 13. In order to detect whether or not a passive operation has been performed by the remote control key 13, first, whether or not the request button 11e from the reader 11 has been operated is detected (step S30).

[0068] If the request button 11e is in the ON state in step S30, the locked / unlocked state is checked by the lock / unlocked state detection units 1b, 6b of the main lock 1, sub lock 10, and locking unit 6. If all locks are unlocked (step S31) and the request button 11e is being pressed and held (step S32), it is determined that there is an intention to lock the locking unit 6 by pressing and holding the button, and step S5 is executed, and all locks transition to the locked state.

[0069] Furthermore, if all the locks are not in the unlocked state in step S31, step S51 is executed, an unlock operation signal is output to all the locks, all the locks are unlocked, and the control ends. If no long press was performed in step S32, step S13 is executed to check the mode.

[0070] Furthermore, if no operation on the request button 11e is detected in step S30, it is next determined whether the card key 14 is held over the reader 11 (step S40). It is determined whether or not there is access using the card key 14. When the card key 14 is held over the reader 11 and all locks are in the unlocked state (step S41), it is determined whether or not the card key 14 is being held up long (step S42). If the card key 14 is not being held up long, it is assumed that there is no intention to lock the locking unit 6 by holding it up long, and a mode check is performed in step S13. If the card key 14 is being held up long, step S5 is performed and all locks transition to the locked state.

[0071] If all the locks are not unlocked in step S41, step S51 is executed to output an unlock operation signal to all the locks, thereby unlocking all the locks.

[0072] Furthermore, if the card key 14 is not detected as being held over the reader 11 in step S40, it is detected whether the unlock button 13b of the lock control device 9 has been turned ON (step S50).If this is detected, step S51 is executed and all locks are unlocked, and if this is not detected, it is detected whether or not an unlocking operation has been performed by active operation of the remote control key 13 (step S60).

[0073] If an unlocking operation is not detected in step S60, the control ends, and if an unlocking operation is detected, step S51 is executed.

[0074] Another embodiment of the present invention is shown in Figure 5. In this example, the functions of the auxiliary electric lock device 20 are housed in the same housing, and the auxiliary electric lock device 20 of the present invention can be added to a general electric lock system consisting of a lock control device 9, a reader 11, a main lock 1, and a sub lock 10 without making any major changes.

[0075] In FIG. 5 and subsequent figures, unless otherwise specified, configurations that are substantially the same as those in the embodiment shown in FIG. 2 are given the same reference numerals and descriptions thereof are omitted.

[0076] In this example, a second sensor device 16 consisting of a second sensor 7 used in the above-mentioned embodiment and a communication unit 9c is fixed to the lock control device 9, and when the second sensor 7 detects vibration, it is output from the communication unit 16a to the communication unit 20a of the auxiliary electric lock device 20.

[0077] The auxiliary electric lock device 20 has a lock control unit 4 which operates under the control of the control unit 20b, a locking unit 6, a communication unit 20a and a sensor 3. The output from the sensor 3, or if there is output from the sensor 3 and a second sensor 7, the difference between the outputs of the sensor 3 and the second sensor 7 is judged in the judgment unit 4a. If an unauthorized door-opening operation is judged, the lock / unlock signal output unit 4c of the lock control unit 4 outputs a locking operation signal to drive the electric actuator 5 and move the deadbolt 12 to the extended position (locked position).

[0078] In addition, when an unlocking operation signal is output from the lock control device 9 and notified to the communication unit 20a of the auxiliary electric lock device 20, the control unit 20b sets the unlocking operation signal to the lock / unlock signal output unit 4c and drives the deadbolt 12 to the unlocked position.

[0079] In contrast, when a locking operation signal is output from the lock control device 9, the control unit 20b searches for the mode setting unit 15, and if it is in the security mode, it sets a locking operation signal to the locking / unlocking signal output unit 4c to transition the locking unit 6 to the locked state, but if it is in the normal operation mode, no output is made to the locking / unlocking signal output unit 4c and the status quo is maintained.

[0080] In the above, the output of the lock control device 9 is connected to the auxiliary electric lock device. However, as shown in FIG. 6, if the device is configured to operate in the normal operation mode without performing mode setting, the auxiliary electric lock device can be connected to the lock control device without making any changes to the installed electric lock system. You can add a location.

[0081] Yet another embodiment of the present invention is shown in Fig. 7. In this embodiment, the output from the second sensor 7 of the second sensor device 16 described above is transmitted to a wireless communication unit 20c of an auxiliary electric lock device 20 via a wireless communication unit 16b.

[0082] Furthermore, in order to manually operate the deadbolt 12 from inside the room, the main lock 1 is equipped with a thumbturn device 17 consisting of a thumbturn 8, a thumbturn rotation detection sensor 17a that detects the rotation of the thumbturn 8, and a wireless communication unit 17b. The thumbturn 8 is rotated between a locked rotation position corresponding to the locked position and an unlocked rotation position corresponding to the unlocked position, and when the thumbturn 8 is rotated, the thumbturn rotation detection sensor 17a detects the rotation position of the thumbturn 8 and transmits the detected position to the wireless communication unit 20c of the auxiliary electric lock device 20 via the wireless communication unit 17b.

[0083] The auxiliary electric lock device is equipped with a lock control unit 4, which operates under the control of a control unit 20b, a locking unit 6, a sensor 3, and a wireless communication unit 20c, and the wireless communication unit 20c wirelessly receives the output from the second sensor 7 and the rotation operation of the thumb turn 8.

[0084] The lock control unit 4 has a determination unit 4a, a lock / unlock signal output unit 4c, and a mode setting unit 15, and the lock unit 6 performs lock / unlock operations in response to a lock / unlock operation signal from the lock / unlock signal output unit 4c.

[0085] As in the above-described embodiment, when the judgment unit 4a of the lock control unit 4 detects an unauthorized door-opening operation on the door 2 based on the output of the sensor 3 and the second sensor 7, the lock / unlock signal output unit 4c outputs a lock instruction signal to the locking unit 6 and moves the deadbolt 12 to the locked position.

[0086] In addition, when the thumb turn 8 is rotated to the locked rotation position, that is, when the door is locked from inside the room and the thumb turn rotation detection sensor 17a detects the rotation of the thumb turn to the locked position and the detection result is received by the wireless communication unit 20c, the control unit 20b checks the setting value of the mode setting unit 15 of the lock control unit 4, and if it is in security mode, sets a lock operation signal in the lock / unlock signal output unit and transitions the locking unit 6 to the locked state.

[0087] On the other hand, when the mode setting unit 15 is in the normal operation mode, no output is made to the lock / unlock signal output unit, and the current state is maintained.

[0088] Furthermore, when an unlocking operation of the thumb turn 8 is notified from the thumb turn device 17, an unlocking operation signal is output to the lock / unlock signal output section 4c, and the locking section 6 is put into the unlocked state.

[0089] FIG. 8 shows an operation flowchart of the auxiliary electric lock device of the embodiment shown in FIG.

[0090] First, when control begins, the control unit 20b monitors the output from sensor 3, and when it detects the output of sensor 3 (step S1), it checks the output from the second sensor 7 (step S2). When the output from the second sensor 7 is observed, it calculates the difference between the outputs of sensors 3 and 7 (step S3) and then determines whether or not an unauthorized door-opening operation has occurred (step S4). If no output from the second sensor 7 is observed, it determines whether or not an unauthorized door-opening operation has occurred based directly on the output from sensor 3 (step S4).

[0091] If it is determined in step S4 that the door has been opened illegally, the lock / unlock signal output unit 4c outputs a lock operation signal to the lock unit 6 to lock the lock unit 6 (step S5), and the control ends.

[0092] In contrast, as a result of the determination in step S4, it is not determined that the door has been opened illegally or If there is no output from the sensor 3 in step S1, a check is made to see whether a locking / unlocking operation signal has been received from the thumb turn device 17. If it is a locking operation signal (step S10), the setting value in the mode setting unit 15 is checked (step S11). If it is the security mode, step S5 is executed to transition to the locked state, and if it is the normal operation mode, control is terminated without transitioning to the locked state.

[0093] Also, when an unlocking operation of the thumb turn 8 is notified in step S10 (step S20), an unlocking operation signal is output to the locking unit 6 and the control ends (step S21).

[0094] As described above, according to this embodiment, an auxiliary electric lock device 20 can be added simply by replacing the thumb turn 8 installed in the existing main lock 1, without making any changes to the existing lock control device 9, etc.

[0095] Furthermore, if the auxiliary electric lock device 20 is battery-powered, wiring work will be unnecessary, and installation work can be reduced. [Explanation of symbols]

[0096] 1 main lock 2 Doors 3 Sensors 4 Lock control unit 5 Electric Actuator 6 Locking section 7 Second Sensor 8 Thumb turn 9 Lock control device 20 Auxiliary electric lock device

Claims

1. It is attached to a door that can be locked with a master lock, A sensor that detects door vibration; a lock control unit that outputs a lock instruction signal when an unauthorized door opening operation is detected; a locking unit that is maintained in an unlocked state and that transitions to a locked state by an electric actuator when a lock instruction signal is output from the lock control unit; a second sensor for detecting vibration at a position spaced apart from the door; The lock control unit is an auxiliary electric lock device that determines whether or not there is unauthorized door opening operation based on the difference in output between the sensor and the second sensor.

2. 2. The auxiliary electric lock device according to claim 1, wherein the lock control unit and the locking unit are housed in the same case.

3. 3. The auxiliary electric lock device according to claim 1, wherein the locking section transitions to an unlocked state only in synchronization with an unlocking operation of the main lock, and maintains the unlocked state without transitioning to a locked state in response to a locking operation.

4. 4. The auxiliary electric lock device according to claim 3, wherein the locking section transitions to an unlocked state in response to an unlocking operation on a thumb turn that manually locks or unlocks the main lock.

5. 5. The auxiliary electric lock device according to claim 1, wherein the locking section can be locked by a locking operation different from the locking operation of the main lock by a lock control device that electrically controls locking and unlocking of the main lock.

6. A master lock that is attached to a door and can be locked and unlocked by a user; A locking unit that is attached to the door separately from the main lock and is driven to lock and unlock by an electric actuator; A sensor for detecting vibration of the door; A second sensor that detects vibrations at a position spaced apart from the door; a lock control unit including a determination unit that compares a difference between an output from the sensor and an output from the second sensor with a preset threshold value to determine whether or not there is an unauthorized door opening operation; The locking unit is maintained in an unlocked state regardless of the locking operation of the main lock, The lock control unit is an electric lock system that transitions the locking unit to a locked state when the determination unit detects an unauthorized door opening operation.

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